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Ettringite
Ettringite

Marble
Marble



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Ettringite
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Marble

Ettringite and Marble Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

Partially soluble in water
-

Durability

-
-

Specific Gravity

1.77-9999
1 7.18
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Fracture

-
-

Cleavage

Perfect on {10 1 0}
None

Mohs Hardness

2-2.5-9999
2 10
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Chemical Composition

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
CaCO3

Ettringite and Marble Chemical Formula

While comparing Ettringite and Marble physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Ettringite and Marble chemical formula.

  • Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Marble- CaCO3

Ettringite and Marble Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Marble Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Marble Optical Properties during the identification of gemstone. Specific gravity of Ettringite is whereas that of Marble is .